Here's one that purports to nullify future Federal Law.

Regular Session 2021-2022
House Bill 357
Short Title: An Act providing that any Federal law which attempts to register, restrict or ban a firearm or to limit the size of a magazine of a firearm in this Commonwealth shall be unenforceable in this Commonwealth; and imposing penalties.
Prime Sponsor: Representative METCALFE
Last Action: Referred to JUDICIARY, Feb. 17, 2021 [House]
Memo: Right to Bear Arms Protection Act